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Date: Sun, 20 Nov 2005 21:09:15 -0600
From: Dan Nelson <dnelson@allantgroup.com>
To: Paul Saab <ps@freebsd.org>
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Cc: current@freebsd.org, "Chad Leigh -- Shire.Net LLC" <chad@shire.net>,
	Kris Kennaway <kris@obsecurity.org>
Subject: Re: avail memory is short by 1G on my FreeBSD 6.0-STABLE MP Dell
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In the last episode (Nov 20), Paul Saab said:
> Chad Leigh -- Shire.Net LLC wrote:
> >I assume you are talking about the "phenomenon"  of RAM "missing" due 
> >to PCI and other I/O mapping into the 4GB address space?  What struck 
> >me about the OP is that the amount of RAM "missing" is more than I 
> >have ever seen due to this.  My systems are usually 3.4-3.6GB of RAM 
> >with 4GB installed, not 2.86GB (3005MB)...  So are we sure that the 
> >PCI space mapping is the problem?
> 
> Enable PAE and you'll get all your ram.

Anyone know if it's possible for the kernel to determine if any RAM is
mapped above the 4gb point and warn the user about how much memory is
unaccessable without PAE?

-- 
	Dan Nelson
	dnelson@allantgroup.com